fairly rare: Galway, Sligo etc. Ir. Ó Gormghaile (blue valour). Now usually changed to Gormley which is properly an Ulster name. The name belongs to septs in Mayo and Roscommon and has even altered to Gorman and Grimes. IF.

Gormley:

numerous: Tyrone-Derry, Ulster generally, N Leinster, Connacht. Ir. Ó Gormshleaghaigh (dark spearman). Mod. Ó Garmaile. A sept located on the Foyle near Strabane. The name is used in Connacht for Ó Gormghaile. IF & SGG.